Test drone builds.

.drone.yml

@@ -22,7 +22,7 @@ steps:
       AUTH_TOKEN:                 # Gitea access token ENV variable
         from_secret: AUTH_TOKEN   # Name of DroneCI secret exposed above
     commands:
-      - apt-get install -y dpkg-dev unzip zip curl
+      - apt-get update && apt-get install -y dpkg-dev unzip zip curl
       - ./gradlew --quiet --no-daemon build jpackage
       - for file in build/jpackage/*.{rpm,deb} ; do curl -s --user "$${AUTH_TOKEN}" --upload-file "$${file}" "https://git.data.coop/api/packages/${DRONE_REPO_OWNER}/generic/${DRONE_REPO_NAME}/${DRONE_TAG}/$(basename $file)" ; done
     when: